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Finding the Fourth Proportional to 519,862.20, 779,793.30 and 458,844.90

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Solution

The fourth proportional to 519,862.20, 779,793.30 and 458,844.90 is: 688,267.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,862.20 : 779,793.30 = 458,844.90 : x
  2. Step 2: Convert to fraction form
    519,862.20/779,793.30 = 458,844.90/x
  3. Step 3: Cross multiply
    519,862.20x = 779,793.30 × 458,844.90
  4. Step 4: Simplify right side
    519,862.20x = 357,804,178,759.17
  5. Step 5: Solve for x
    x = 357,804,178,759.17/519,862.20
  6. Step 6: Final answer
    x = 688,267.35

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.